https://www.bto.org/our-work/science/publications/papers/btos-nest-record-scheme-value-counting-your-eggs-they
The BTO's Nest Record Scheme - the value of counting your eggs before they hatch
The BTO's Nest Record Scheme - the value of counting your eggs before they hatch
Citation
Leech, D.I. 2007. The BTO's Nest Record Scheme - the value of counting your eggs before they hatch. British Wildlife 18: 234.
